摘要：

The Shannon channel capacity limits are catching up to optical transport network capabilities. The current standard 50 GHz channel spacing used for dense wavelength division multiplexing (DWDM) imposes limits on transporting signals over reasonable distances when they have rates much over 100Gbit/s. 200Gbit/s is the practical limit per wavelength for distances of interest in telecom networks The old paradigm of adding new discrete rates for OTN had largely reached its practical limits, making a modular rate and frame structure approach more attractive. There should not be a new switching layer in OTN associated with B100G.

展开